Does science have all the answers? Can it even deal with abstract reasoning that reaches beyond the world experienced by us? How can we be so sure that the physical world is sufficiently ordered to be intelligible to humans? How is it that mathematics, a product of human minds, can unlock the secrets of the physical universe? Are all such questions to be ruled out as inadmissible if science cannot settle them? Metaphysics has traditionally been understood as reasoning beyond the reach of science, sometimes even claiming realities that are beyond its grasp.